Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A display panel comprising: a first substrate on which a plurality of gate lines, a plurality of data lines, a plurality of pixels defined by crossings of the plurality of gate lines and the plurality of data lines, and a plurality of banks are located, wherein the plurality of banks define emission areas of the plurality of pixels; and a second substrate on which a plurality of partitions are located at positions corresponding to locations of the plurality of banks, wherein a refractive index of plurality of partitions is lower than a refractive index of a material provided between the emission area and the second substrate, wherein the gate lines and data lines on the first substrate are made of a transparent conductive material, and wherein the light transmittance of the region corresponding to the plurality of banks in the second substrate is equal to or higher than the light transmittance of the emission area in the first substrate.
Display technology. This invention addresses issues related to light emission and optical properties in display panels. The display panel includes a first substrate containing multiple gate lines, multiple data lines, and multiple pixels formed at the intersections of these lines. Also on the first substrate are multiple banks that define the emission areas of these pixels. The gate and data lines are constructed from a transparent conductive material. A second substrate is positioned opposite the first. This second substrate features multiple partitions located where the banks are on the first substrate. A key feature is that the refractive index of these partitions is lower than the refractive index of the material situated between the pixel's emission area and the second substrate. Furthermore, the light transmittance of the area on the second substrate corresponding to the banks is at least as high as the light transmittance of the emission area on the first substrate. This configuration aims to improve light management and optical performance within the display.
2. The display panel according to claim 1 , wherein the material provided between the emission area and the second substrate is an adhesive material, and wherein the refractive index of the plurality of partitions is lower than a refractive index of the adhesive material.
A display panel includes a first substrate with an emission area, a second substrate, and partitions separating the emission area into multiple sub-areas. The partitions are made of a material with a lower refractive index than an adhesive material filling the space between the emission area and the second substrate. This configuration improves light extraction efficiency by reducing internal reflections and enhancing light transmission through the panel. The partitions create distinct sub-areas within the emission area, allowing for controlled light emission and improved display performance. The adhesive material bonds the substrates while maintaining optical properties that enhance light output. The lower refractive index of the partitions compared to the adhesive material ensures efficient light coupling between the emission area and the second substrate, minimizing losses due to total internal reflection. This design is particularly useful in high-resolution displays where precise light control and high brightness are required. The combination of partitions and adhesive material optimizes light extraction, leading to brighter and more efficient display panels.
3. The display panel according to claim 1 , wherein a side wall of the partitions has a concave polygonal shape or a concave arc shape.
A display panel includes a substrate with partitions that define multiple sub-pixels. The partitions are arranged to separate the sub-pixels and improve display performance. The side walls of these partitions have a concave polygonal or concave arc shape. This design reduces light leakage between sub-pixels, enhances contrast, and improves viewing angles. The concave shape of the side walls helps to block stray light more effectively compared to straight or convex walls, ensuring better optical isolation between adjacent sub-pixels. The partitions may be formed using a photolithography process or other patterning techniques, and the concave shape can be achieved through controlled etching or molding. The display panel may be used in liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays, or other types of flat-panel displays. The concave side walls of the partitions improve image quality by minimizing cross-talk and enhancing color purity. The overall structure ensures uniform light distribution and reduces the risk of light scattering, leading to a higher-quality display with improved contrast and color accuracy.
4. The display panel according to claim 1 , wherein a reflective material is located on the second substrate in a region corresponding to each of the plurality of banks of the first substrate.
A display panel includes a first substrate with a plurality of banks and a second substrate positioned opposite the first substrate. The banks on the first substrate are used to define pixel regions or other structural elements. The second substrate has a reflective material applied in regions that align with each of the banks on the first substrate. This reflective material enhances light reflection within the display panel, improving brightness and efficiency. The reflective material may be a metal or other highly reflective coating, and its placement ensures that light is directed back toward the viewer or other intended direction. This configuration is particularly useful in emissive or transmissive display technologies where light management is critical for performance. The reflective material may also reduce crosstalk between adjacent pixels or improve contrast by minimizing stray light. The overall structure allows for efficient light utilization while maintaining a compact and functional display design.
5. The display panel according to claim 1 , wherein a color filter is provided between two partitions, such that the color filter is lower than or flush with the two partitions.
A display panel includes a substrate with partitions forming multiple sub-pixels, where each sub-pixel contains a light-emitting element. The partitions define the boundaries of the sub-pixels and may be made of an insulating material. The display panel further includes a color filter positioned between two adjacent partitions. The color filter is designed to be lower than or flush with the top surfaces of the partitions, ensuring it does not protrude above them. This configuration helps maintain a uniform surface level across the display, preventing disruptions in light emission or potential defects during subsequent manufacturing steps. The color filter may be aligned with the light-emitting element in each sub-pixel to control the color of emitted light. The partitions and color filter are integrated into the display structure to optimize light output and color accuracy while maintaining structural integrity. This design is particularly useful in high-resolution displays where precise color control and uniform light emission are critical.
6. A display device comprising: the display panel of claim 1 ; a first driver configured to apply a data signal to the data lines; a second driver configured to apply a gate signal to the gate lines; and a timing controller configured to control the first driver and the second driver.
A display device includes a display panel with an array of pixels arranged in rows and columns, where each pixel is connected to a data line and a gate line. The device further includes a first driver that applies a data signal to the data lines to control the pixel brightness, and a second driver that applies a gate signal to the gate lines to selectively activate pixel rows. A timing controller coordinates the operation of both drivers to ensure synchronized signal application. The display panel may incorporate a substrate with a thin-film transistor (TFT) layer, where the TFTs control current flow to the pixels based on the gate and data signals. The timing controller generates control signals to regulate the timing of the data and gate signals, ensuring proper pixel charging and display refresh rates. This configuration enables precise control over pixel activation and brightness, improving display performance and image quality. The system may also include additional components such as a power supply or signal processing circuitry to enhance functionality. The invention addresses challenges in display synchronization, signal integrity, and power efficiency by integrating these components into a unified control architecture.
7. The display device according to claim 6 , wherein an adhesive material is provided in the emission area, and the adhesive material bonds the first and second substrates together, and wherein the refractive index of the plurality of partitions is lower than a refractive index of the adhesive material.
This invention relates to display devices, specifically addressing challenges in bonding substrates while maintaining optical performance. The device includes a first substrate, a second substrate, and a plurality of partitions positioned between them. The partitions define an emission area where light is emitted. An adhesive material is applied in the emission area to bond the first and second substrates together. The partitions have a refractive index lower than that of the adhesive material, ensuring efficient light extraction and minimizing internal reflections. The partitions may be arranged in a grid or other pattern to control light propagation. The adhesive material is transparent and optically compatible with the substrates and partitions, ensuring clarity and durability. The design improves structural integrity while optimizing light transmission, making it suitable for high-performance displays like OLEDs or microLEDs. The invention focuses on balancing mechanical bonding with optical efficiency, addressing issues like delamination and light leakage in advanced display technologies.
8. The display device according to claim 6 , wherein the emission area and the bank region in the first substrate are both transparent.
A display device includes a first substrate with an emission area and a bank region, where both the emission area and the bank region are transparent. The device also features a second substrate facing the first substrate, with a light-emitting element positioned between them. The light-emitting element emits light toward the second substrate, and the bank region surrounds the emission area to define a light emission region. The device further includes a color filter layer on the second substrate, which selectively transmits light emitted from the light-emitting element. The color filter layer is positioned to overlap the emission area and the bank region, ensuring that light passing through both regions is filtered. This design allows for improved light transmission and color accuracy in the display. The transparent bank region eliminates light blockage, enhancing brightness and efficiency while maintaining precise color control. The overall structure enables a high-performance display with uniform light output and accurate color representation.
9. A method for fabricating a display panel, comprising: forming a plurality of gate lines, a plurality of data lines, a plurality of pixels defined by crossings of the plurality of gate lines and data lines and a plurality of banks on a first substrate, wherein the plurality of banks define emission areas of the plurality of pixels; forming a plurality of partitions located on a second substrate corresponding to locations of the plurality of banks formed on the first substrate; and bonding the first substrate and the second substrate together, wherein a refractive index of the plurality of partitions is lower than a refractive index of a material provided between the emission area and the second substrate, wherein the gate lines and data lines on the first substrate are made of a transparent conductive material, and wherein the light transmittance of the region corresponding to the plurality of banks in the second substrate is equal to or higher than the light transmittance of the emission area in the first substrate.
This invention relates to a method for fabricating a display panel, specifically an organic light-emitting diode (OLED) display with improved light extraction efficiency and transparency. The method addresses the challenge of enhancing brightness and reducing power consumption in OLED displays while maintaining high transparency in non-emissive areas. The process involves forming a first substrate with gate lines, data lines, pixels, and banks that define emission areas. The gate and data lines are made of a transparent conductive material to minimize light blockage. A second substrate is prepared with partitions aligned to the banks on the first substrate. These partitions have a lower refractive index than the material between the emission area and the second substrate, which helps redirect light outward, improving light extraction efficiency. The second substrate is designed so that the regions corresponding to the banks have equal or higher light transmittance than the emission areas on the first substrate, ensuring uniform transparency across the display. The two substrates are then bonded together to form the final display panel. This design optimizes both light emission and transparency, making it suitable for high-efficiency, see-through displays.
10. The method according to claim 9 , wherein the step of bonding the first and second substrates further includes forming an adhesive material in the emission area of the first substrate or in a region of the second substrate where no partition is formed, wherein the refractive index of the plurality of partitions is lower than a refractive index of the adhesive material.
This invention relates to a method for bonding substrates in a display device, particularly addressing challenges in optical efficiency and structural integrity. The method involves bonding a first substrate, which includes an emission area for light output, to a second substrate. A key aspect is the formation of partitions on the second substrate, which are designed to prevent light leakage and improve display performance. The partitions are made from a material with a lower refractive index than the adhesive material used to bond the substrates. The adhesive material is applied either in the emission area of the first substrate or in regions of the second substrate where no partitions are present. This ensures proper bonding while maintaining optical properties. The partitions act as barriers to confine light within the emission area, enhancing brightness and contrast. The method also includes aligning the substrates before bonding to ensure precise placement of the partitions relative to the emission area. The invention improves display quality by reducing light scattering and improving light extraction efficiency.
11. The method according to claim 9 , wherein the step of forming the plurality of partitions includes: depositing a negative photoresist on the second substrate; and exposing the negative photoresist using a photomask corresponding to the bank of the first substrate to form the plurality of partitions.
This invention relates to a method for fabricating microelectronic devices, specifically involving the formation of partitions on a substrate to align with features on another substrate. The problem addressed is the precise alignment and patterning of partitions on a second substrate to match the bank structures of a first substrate, ensuring accurate device assembly or layer alignment. The method involves depositing a negative photoresist on the second substrate and then exposing the photoresist using a photomask that corresponds to the bank pattern of the first substrate. The photomask defines the regions where the photoresist will remain after development, forming partitions that align with the bank structures. This ensures that the partitions on the second substrate match the layout of the banks on the first substrate, facilitating proper alignment during subsequent assembly or processing steps. The use of a negative photoresist simplifies the patterning process by retaining exposed areas while removing unexposed regions, improving efficiency and precision in the alignment of microelectronic features. This technique is particularly useful in applications requiring high-precision alignment, such as semiconductor packaging, display manufacturing, or microelectromechanical systems (MEMS) fabrication.
12. The method according to claim 11 , wherein the step of exposing the negative photoresist includes: exposing the negative photoresist by using a halftone photomask or a multi-tone photomask or by adjusting exposure time or exposure amount.
This invention relates to a method for patterning a negative photoresist using advanced exposure techniques to achieve precise control over the resulting photoresist profile. The method addresses the challenge of creating complex or graded structures in photoresist layers, which is critical in semiconductor manufacturing and microfabrication. The process involves exposing a negative photoresist to light through a halftone or multi-tone photomask, which modulates light intensity to create varying exposure levels across the resist. Alternatively, exposure time or exposure amount can be adjusted to achieve similar control. These techniques allow for the formation of features with controlled sidewalls, tapered edges, or other desired profiles, which are difficult to achieve with conventional binary photomasks. The method is particularly useful in applications requiring high-resolution patterning, such as in the fabrication of integrated circuits, microelectromechanical systems (MEMS), or optical components. By leveraging halftone or multi-tone masks or exposure adjustments, the invention enables finer control over the photoresist development process, improving the accuracy and flexibility of microfabrication techniques.
13. The method according to claim 9 , further comprising: forming a color filter lower than or flush with the plurality of partitions on the second substrate in a region corresponding to the emission area.
A method for fabricating a display device addresses the challenge of improving light extraction efficiency and color purity in emissive displays. The method involves forming a color filter on a second substrate, positioned below or flush with partitions that define emission areas. The color filter is aligned with the emission area to enhance color accuracy and reduce crosstalk between adjacent pixels. The partitions, which may be formed from a light-blocking material, physically separate the emission areas to prevent optical interference. The color filter is integrated into the display structure to optimize light transmission while maintaining precise alignment with the emissive elements. This approach improves display performance by ensuring uniform color output and minimizing unwanted light leakage. The method is particularly applicable to high-resolution displays where precise color control and efficient light extraction are critical.
14. A display panel comprising: a first substrate on which a plurality of gate lines, a plurality of data lines, a plurality of pixels defined by crossings of the plurality of gate lines and the plurality of data lines, and a plurality of banks are located, wherein the plurality of banks define emission areas of the plurality of pixels; and a second substrate on which a plurality of partitions are located at positions corresponding to locations of the plurality of banks, wherein a refractive index of plurality of partitions is lower than a refractive index of a material provided between the emission area and the second substrate, wherein a lateral side of the partitions has a multi-step reverse taper shape; and wherein the gate lines and data lines on the first substrate are made of a transparent conductive material, and wherein the light transmittance of the region corresponding to the plurality of banks in the second substrate is equal to or higher than the light transmittance of the emission area in the first substrate.
This invention relates to a display panel designed to improve light extraction efficiency and transparency. The display panel includes a first substrate with gate lines, data lines, and pixels defined by their intersections. The pixels are surrounded by banks that define emission areas. A second substrate is positioned opposite the first substrate and includes partitions aligned with the banks. These partitions have a lower refractive index than the material between the emission area and the second substrate, enhancing light extraction. The partitions feature a multi-step reverse taper shape on their lateral sides, which further optimizes light directionality. Both the gate and data lines on the first substrate are made of transparent conductive material to minimize light blockage. Additionally, the region of the second substrate corresponding to the banks has equal or higher light transmittance than the emission area on the first substrate, ensuring uniform brightness and clarity. This design reduces light loss within the panel and improves overall display performance by maximizing light output and maintaining high transparency.
15. The display panel according to claim 14 , wherein the material provided between the emission area and the second substrate is an adhesive material, and wherein the refractive index of the plurality of partitions is lower than a refractive index of the adhesive material.
A display panel includes a first substrate with an emission area, a second substrate, and partitions separating the emission area into multiple sub-areas. The partitions are formed from a material with a lower refractive index than an adhesive material placed between the emission area and the second substrate. This configuration improves light extraction efficiency by reducing internal reflections and enhancing light transmission through the panel. The partitions create distinct sub-areas within the emission area, allowing for controlled light emission and improved display performance. The adhesive material bonds the first and second substrates while maintaining optical properties that enhance light output. The lower refractive index of the partitions ensures minimal light scattering at the boundaries, optimizing brightness and uniformity across the display. This design is particularly useful in high-resolution displays where precise light control is essential. The combination of the partitions and adhesive material ensures structural integrity while maximizing optical efficiency.
16. The display panel according to claim 14 , wherein a reflective material is located on the second substrate in a region corresponding to each of the plurality of banks of the first substrate.
A display panel includes a first substrate with a plurality of banks and a second substrate positioned opposite the first substrate. The banks on the first substrate are arranged to define pixel regions. A reflective material is positioned on the second substrate in regions that align with each of the banks on the first substrate. This reflective material enhances the display's performance by improving light reflection, which can increase brightness and contrast in certain display modes, such as reflective or transflective displays. The reflective material may be a metal or other highly reflective coating applied in specific areas to optimize optical efficiency without interfering with other display functions. The arrangement ensures that the reflective material does not overlap with active display areas, maintaining image quality while enhancing visibility under varying lighting conditions. This design is particularly useful in applications where energy efficiency and outdoor readability are important, such as in electronic paper, e-readers, or low-power digital signage. The reflective material may be patterned or deposited using techniques like sputtering or evaporation to achieve precise alignment with the banks on the first substrate. The overall structure improves display performance by leveraging controlled light reflection while maintaining the structural integrity of the panel.
17. The display panel according to claim 14 , wherein a color filter is provided between two partitions, such that the color filter is lower than or flush with the two partitions.
A display panel includes a substrate with partitions defining sub-pixels, where each sub-pixel contains a light-emitting element. The partitions are arranged to separate adjacent sub-pixels and may be formed from a material such as a resin. The panel further includes a color filter positioned between two partitions, where the color filter is either lower than or flush with the upper surfaces of the partitions. This configuration ensures that the color filter does not interfere with the light emission from the light-emitting elements while still providing color filtering functionality. The partitions may be formed by a photolithography process, and the color filter may be aligned with the partitions to maintain precise sub-pixel boundaries. The light-emitting elements are typically organic light-emitting diodes (OLEDs) or similar devices, and the partitions help confine the emitted light within each sub-pixel. The color filter enhances color purity by absorbing unwanted wavelengths, improving display performance. The overall structure ensures efficient light extraction while maintaining high color accuracy.
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February 18, 2020
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